waaay out in hawaii. but don't you worry, we will always be together for christmas. [ male announcer ] being together is the best part of the holidays and cheerios is happy to be part of the family. you just ate dallas! >>> some erie sounds from space float through the air in san francisco today, where physicists ever gathered for a conference. >>> that audio may sound like the chirping of birds or crick etc.s. they're radio waves from the earth's radiation belt. twin spacecraft from nasa have been probing the so-called hostile radiation belt force several months now collecting detailed measure manies of high energy particles and radio waves. eight years after it landed on mars, nasa's rover opportunity is still making discoveries. scientists announceed today at the american geophysical union meeting in san francisco that the rover has uncovered hints of clay mirals. they're important because they hold clues about the martian climate and should help scientists figure out if surface conditions could've bee